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martinOPS
Unspecified
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 Posted - 05/13/2008 : 08:13:54 AM
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Hello everybody,
I have a pattern of x,y,z data points. Now I like to fit the data points with a plain. How can I fit this with origin?
Thanx for your help.
Martin
Origin Version: 6.1
Operating System: Win XP |
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greg
USA
1379 Posts |
Posted - 05/14/2008 : 11:14:11 AM
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This article should get you started:
http://www.originlab.com/www/support/resultstech.aspx?ID=57&language=English&Version=All
Note that the equation of a plane is
z=z0+Px*x+Py*y;
So you will need 2 Independent Variables (x,y) and one Dependent (z) as well as three user-defined parameters (z0,Px,Py). Note that you must supply your own initial parameter values. (1 should be fine for all.)
In Options:Control you should set Parameters Significant Digits to 16.
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martinOPS
Unspecified
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Posted - 05/15/2008 : 08:04:28 AM
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Hi Greg,
thank you I will try it right now.
Thanx
MArtin
quote:
This article should get you started:
http://www.originlab.com/www/support/resultstech.aspx?ID=57&language=English&Version=All
Note that the equation of a plane is
z=z0+Px*x+Py*y;
So you will need 2 Independent Variables (x,y) and one Dependent (z) as well as three user-defined parameters (z0,Px,Py). Note that you must supply your own initial parameter values. (1 should be fine for all.)
In Options:Control you should set Parameters Significant Digits to 16.
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Plain fit of xyz data points.